Songfacts®:

• Kesha explained in the album's press release that this song is about getting hit on by "old dudes."
• Rolling Stone asked Kesha if she intentionally sets out to write party songs. The singer replied: "People ask me that, and I don't know, I just write about what I live - literally, my entire record is totally autobiographical, because I think there's a great pop song in anything and everything, any situation. There's a song called 'Dinosaur' about this old guy who was hitting on me, and his toupee was kind of falling off, and I was like, 'Oh my God, you're so old, you're prehistoric, you're like a dinosaur. D-I-N-O-S-A-you are a dinosaur.'"
• According to interviews, Kesha's favorite dinosaur is the plesiosaur, a marine reptile with paddlelike limbs that was common in Europe and North America during the Mesozoic Era. As far as we're aware, she has not nominated a favorite "old dude!"